Well... my sister got me Mario Party 6 for Christmas because we've had every other Mario Party. I didn't really want it and she didn't keep the receipt 
So now I want to return it because I havn't opened it, and i'm not sure there is anywhere they accept returns without receipts. Does anyone know anywhere? or should i just trade it in at the store?

So now I want to return it because I havn't opened it, and i'm not sure there is anywhere they accept returns without receipts. Does anyone know anywhere? or should i just trade it in at the store?